Acylating Capacity of the Phosphotungstic Wells—Dawson Heteropoly Acid: Intermediate Reactive Species

Sebastian E. Collins; Silvana R. Matkovic; Adrian L. Bonivardi

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Acylating Capacity of the Phosphotungstic Wells—Dawson Heteropoly Acid: Intermediate Reactive Species

机译：磷钨矿井的Dawson杂多酸的酰化能力：中间反应物种

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The mechanism of adsorption and decomposition of acetic anhydride over phosphotungstic Wells—Dawson heteropoly acid (HPA) was investigated through infrared spectroscopy with especially dedicated in situ cells. Both gaseous and liquid acetic anhydride dissociatively chemisorbs on the heteropoly acid, producing the intermediate acyl CH3CO~+ species, adsorbed acetate species, and acetic acid. The former is known as the key intermediate species in the Friedel-Crafts acylation reaction. Moreover, the consumption of the Br0nsted acid sites observed during the adsorption and decomposition of acetic anhydride over the HPA indicates that those sites are the active ones of the genesis of the acyl intermediate species. Surface acetate species and acetic acid strongly adsorb on the active acid sites deactivating the heteropoly acid.

机译：通过红外光谱研究了专门用于原位细胞的磷钨井-道森杂多酸（HPA）上乙酸酐的吸附和分解机理。气态和液态乙酸酐都在杂多酸上解离化学吸附，从而产生中间的酰基CH3CO〜+物质，吸附的乙酸盐物质和乙酸。前者被称为Friedel-Crafts酰化反应中的关键中间物种。此外，在乙酸酐在HPA上的吸附和分解过程中观察到的布朗斯台德酸位点的消耗表明，这些位点是酰基中间体物种起源的活性位点。表面乙酸盐和乙酸强烈吸附在活性酸位上，从而使杂多酸失活。

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《The journal of physical chemistry, C. Nanomaterials and interfaces》 |2011年第3期|共10页
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Sebastian E. Collins; Silvana R. Matkovic; Adrian L. Bonivardi;
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1. Acylating Capacity of the Phosphotungstic Wells—Dawson Heteropoly Acid: Intermediate Reactive Species [J] . Sebastian E. Collins, Silvana R. Matkovic, Adrian L. Bonivardi The journal of physical chemistry, C. Nanomaterials and interfaces . 2011,第3期

机译：磷钨矿井的Dawson杂多酸的酰化能力：中间反应物种
2. Tailored Brønsted and Lewis surface acid sites of the phosphotungstic Wells Dawson heteropoly-acid [J] . Matkovic Silvana R., Bosco Marta, Collins Sebastian E., Applied Surface Science . 2019,第NOVa30期

机译：磷钨韦尔斯道森杂多酸的量身定制的Brønsted和Lewis表面酸位
3. SURFACE INTERMEDIATE SPECIES OF THE 4-ISOBUTYLACETOPHENONE ADSORPTION-REACTION OVER FOSFOTUNGSTIC WELLS-DAWSON HETEROPOLY ACID [J] . S.R. MATKOVIC, G.M. VALLE, L.E. BRIAND Latin American Applied Research . 2009,第2期

机译：氟钨-道森杂多酸在4-异丁酮对苯酚的吸附反应中的表面中间物种
4. Phosphotungstic acid, silicotungstic acid and silicon tungsten-cobalt heteropoly acid with bovine serum albumin Interaction [C] . Weiyang Shen, Minxin Song, Jianqiu Chen, International Conference on Advances in Materials and Manufacturing . 2013

机译：磷酸钨酸，硅钨酸和硅钨 - 钴杂多酸，牛血清白蛋白相互作用
5. PART I. NEW CHEMISTRY OF HETEROPOLY ANIONS IN NONPOLAR SOLVENTS. PART II. HETEROPOLY MOLYBDATE COMPLEXES OF SOME PHOSPHATE ESTERS AND NUCLEOTIDES (TUNGSTATES, POLYOXOACIDS, POLYANIONS, POLYTUNGSTATES). [D] . KATSOULIS, DIMITRIS ELIAS. 1985

机译：第一部分：非极性溶剂中杂原子的新化学。第二部分某些磷酸酯和核苷酸（钨酸盐，多羟基氧化物，多聚阴离子，多钨酸盐）的杂多钼酸盐复合物。
6. Interaction of Antimycobacterial Drugs with the Anti-Mycobacterium avium Complex Effects of Antimicrobial Effectors Reactive Oxygen Intermediates Reactive Nitrogen Intermediates and Free Fatty Acids Produced by Macrophages [O] . Keisuke Sano, Haruaki Tomioka, Katsumasa Sato, 2004

机译：抗分枝杆菌药物与鸟分枝杆菌的抗微生物效应物活性氧中间体活性氮中间体和巨噬细胞产生的游离脂肪酸的复合作用的相互作用
7. Reactivities and catalytic functions of heteropoly acids. XI. Effects of reduction of heteropoly acids on isobutene hydration in concentrated aqueous heteropoly acids. [O] . Atsushi AOSHIMA, Setsuo YAMAMATSU, Tatsuo YAMAGUCHI 1987

机译：杂多酸的反应性和催化功能。 XI。杂多酸还原对浓含水杂多酸中异丁烯水合的影响。

Acylating Capacity of the Phosphotungstic Wells—Dawson Heteropoly Acid: Intermediate Reactive Species

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